/Engine/Source/Runtime/Slate/Public/Widgets/Views/STreeView.h
Given a TreeItem, create a Widget to represent it in the tree view.
A widget that represents this item.
virtual [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [ITableRow](API\Runtime\Slate\Widgets\Views\ITableRow) > GenerateNewWidget ( ItemType InItem )